Self-oiling engine.



'Uniren sirenas PATENT onere.

`ALBER'J? CHAPPELL AND ERLE S. ORMSBY, 0F ST. LOUIS, MISSOURI.

SELF-OILING ENGINE.

Specification of Letters Patent. 'l Patented May 16, 1911.

Application med my s, 1910. serial No; 560,137. Y

To ZZ whom it lmay concern: y

Be it known thatwe, ALBERT- R. CHAPPELL and- ERLE S. ORMsBin-citizens ofthe United States, residing at the city of St. Louis, State of Missouri, have jointly invented a new and useful Improvement in Se-lf-Oiling our invention-arranged therein; Fig. 2 is a cross sectionalview on the line :ry, Fi 1, looking inI the direction of the arrow a; ig'. 3 is a cross sectional view on the line 3 3,

Fig. 7 Fig. 4 isacross sectional l'view on the line 4 4, -Fig. 1; Fig. 5 is a cross sec-` tional view on the lin'e'5-5, Fig. 1;-Fig. 6,is

a longitudinal sectional view throughs, part of the casing of an engine, showing a modied form of our invention; and Fig. 7 isa fragmentary sectional View through a portion of 'the casing of an engine, showing our invention in connection with a slightly modied forinpf cross-head. t r Y This invention relates to a new and useful l u 4 n improvement 1n self-011mg engines, and

more particularly-in means for preventing the entrance of oil or other lubricant from the casing of an engineinto the steam cyl-- inders thereof.

In self-oiling engines of the kind or classto which our invention is particularly applicable, that isto say, engines equipped with a splash-system of lubrication, two grades or kinds of oil or other lubricant are usually employed-a comparatively heavy andjbetter grade o r kind of oil being used in and for the cylinder and its 'associate parts' than in the crank-case for lubricating the. movable or ,movingl arts therein". The'oil ,generally used -in t e. crank-case is also lighter in weight than the cylinder oil and has no lubricating properties wheniisedon parts under steam pressure or when introduced with steam; and Whenever this crankcase'oil is allowed to enter or nds entrance into the cylinder (and this has heretofore frequently occurred), the lubricating properties of the cylinder oil become materially `affected and reduced,bthe etliciency of the eny affected and proportionately lowered'. Further, and now referring-'particularly to plants for the manuto the facturel of ice, itl is well known that thel steam from the engine cylinder or cylinders. I

is afterward condensed and, by due process, frozen. In such plants having self-oiling engines of' the class mentioned, it has been found that the cylinder oil is readily separable from this water of condensation before this water is frozen, but that the crank-case oil is not soseparable. whenever this case oil is allowed to enter or lindsentrance into the cylinder and' this has heretofore frequently occurredg, the ice afterward made from the water of condensation from such engines is impure, due resence of this case oil therein, and is hard y tit to use.

The object of our invention is, therefore,l ,broadly to providev means particularly applicable for usein self-oiling engines of the class stated whereby this crank-case oil, while allowed to thoroughly lubricate the moving or movable parts in thecasing of the engine, is prevented from working into orV entering the steam cylinder oricylinders of the engine. f I A- With this object in view, our invention consists in the novel construction of the sev- Consequentlagain,

aov

eral partsthereof and in the novel arrange- .I

ment and combination .of the same, all as -will hereinafter be described and afterward pointed out in the claims'. 4

. In the drawings, wherein like reference characters refer to like parts throughoutV the several views, 1 indicates the casing of an l' engine, `which is suitably supported u on a base 2. This casing 1 may be'o any approved construction and is preferably substantially rectangular greater part off its length, one, or the rear, end thereof, as at 3, being, however, enlarged and substantially circular (.see -particularly Fig.' 1). Suitably rotatably mounted in said end 3 of casing l is a crank- 'shaft 4 having arranged thereupon a suitable crank-disk 5 adapted to rotate therewith in said end 3 of casing 1. Suitably connected to sa'id crankshaft 4 by a crankpin 6 is a connecting-rod 7, the other end of said connecting-rod 7 being pivotall con- .nected by a cross-head pin or Wrist-pin 8 to a cross-head 9 slidable on guides 10-10 in casing 1 9 is a piston-rod 11 adapted, 'on the rotation of crank-shaft 4, to reciprocate through a suitable stuffing-box 12 and in a cylinder 13 throughout the Also connected to said cross-head with a suitable opening,"as at 14, through which the said piston 11 is adapted to pass.` The casin 1 between -wall 14 andcylinder 13 is usua ly open or cut-awayat its .sides,|:

-nsually passes, .this oil inbasin 3 lodgin and the chamber of said casing inclosing the movable parts therein hereinbefore referred to is provided with removable sections',v as. at 15 and 16, whereby access ma be hadto said'movable parts. A removab e section 17 is also preferably rovided in the end 3 of casing 1 whereby cil ,or other lubricant mayl be poured into saidfend 3 of casingl.

The lower part orbottom offsa-id, end 3 of casing l provides 'aabas-in or receptaclaas at 3", foroil or other lubricant, this oil or other lubricant being poured' thereinto through' the opening provided by said removablesection 17. In high s eed seloiL ing engine's'jof the class stateA the crank# shaft usually revolves in the direction'of the arrow, see particularly Fig. 1, and on'the rotation of said crank-shaft the-oill or other lubricant in basin .13? will be splashed-byl -said' crank-dislrdirectly onto the 'moving parts of the enginefin casing 1. Notwith-' ;standing the provisionof a stuihng box.

Athrough which 'the piston rod of an engi on saidipiston' rod has heretofore werke into theA cylinder, with the results hereinbefore referred`to. ..-To prevent the working' of ...this case: toil' into. `the-eylinder '...gand"1" to thereby obviatei-the .results mentioned, we provide a partition wall 18 separating said casing 1 into two compartments-3. compartment A for the crank-disk-zand a compartment. B for the cross head..'-' l`his tionwall 18, which is preferablyv o .any sheet material, issuitably' attached, .as by rivets 19, to the side walls of casing 1, a small space, as at 20, being left between the bottom of saidwall and'the bottom of said casing, whereby oil splashed into said cham? ber B may afterward escape back into said basin 8a. `This partition wall 18, see particularly Fig.' 5, :is provided witlnan en- .larged elongated slot 2 1, through .a which slot said connectigi'gerod 7 is ad te to pass and move, and? oil splashed by said crankldisk 5 on the -ro. tation of crank-shaft a is adapted-topass into chamber' B and directly on to crossfliead 9 and guides l() and 10". The wall 18,;19

' connecting-rod 7 tofreely move therein, .bi1t

also to permit a suifiient amount or quan- -provideon the pistonrod lla metallic cylindrical concavedf'pa gor4 other lubricant will dro .upper guide 10a onto-gsaid' piston' 11.*.'10 prevent such oil thus dropping onto said artirough which' Slot to .pass 'therethrough' into said mpatiiien B and to direct'suc di' c'tlynpont partsitdbetlubriat The cross-head.'

'partment B 'and onto saidV4 cross to a great extent, be prevented ber B,. Should the'forwarde. -be

'l2-2:2 as shown in Fig. 7, this pan 2 2 being-s'oldered 80 or otherwise suitably-secured to saidpistonrod as, for instance, by a set-screw'-23.4 .lfhis pan 22, in the ca se of an opera cro ssh ea'd, will, likewisev to a greatv extent, prev'ent '2t he -v .oil`so plashed into compartment B' psaising-85 :farther forwardly in said compartment-,such 'j oil being'c'aught by said pan and afterward ,dripping therefrom onto the bottom of 4said compartment. B. On the reciproeation of said cross-head, however, the oil splashed into 'said compartment B and onto': said cross-head-S and guides l1() and 10, will be spreadqon said guides `10 and 10a and ontlie rearward stroke fof the cross-headf').the-'bil fronti-said piston-rod from working into' said'cyli'nder 135011 the reciprocation of said piston-rod, we provide'on saidipiston-rod a preferablyloo metallic' concaved cylindrical pan: 24:, r`this pan 24 being soldered or otherwise suitably -secured' to said, piston-rod, as, for instance,

by aset-screw l25, the opening 14 in saidvwalllt being of sufficient diameter to per-' 105 mit the passage therethrough of said pan 24 onthe reciprocation of said piston-rod. This an 2fis so positioned onsaid pistonrod t at'on 4the rearward .stroke of,saidv cross-head 9. said pan will preferably aline 110. withthe :torward'end of the guides 10 and 10l and, should any oil thus drop from said top'guide 10a onto the portion of said piston-'rod between saidJcross-head and said pan 24.-, said pan 24 will absolutely prevent 115 such oilworking forwardly on said .piston rod. And to prevent vany oil' so splashed into said compartment B .from dripping from the top-of said compartment onto that portion of said-piston-rod 11 forwardly .of 120 said pan- 24 when said cross-head -is at the end o f its rearward stroke, we suitably secure, as by means of rivets 26,.to said wall (preferably sheet metal semi-cylindrical stroke, this shield 27 servingto deiiect any 27. Th1s shield 27extendsrearwardly 125. to substantially 'the forward end of top or.

" sibility'of such case oil or other lubricant oil dripping from the top of said compartment B downwardly into the bottom of said compartment and away from said pistonrod.

' -By means of the construction described,

the portionof the piston-rod 11 which reciprocates in said cylinder 13 is kept practically absolutely clean andfree from .any oil or other lubricant used, 4as described, 'in the casing of the engine, whereby any posentering said cylinder` on or with said piston-rod is prevented. Our construction is comparatively simple, may be readily ar ranged upon any engine, of the class stated, and fully accomplishes the object hereinbefore mentioned and, should'the engine be used in a plantfor the manufacture of ice,

` 3 by the crank-disk 5- is comparatively vided or done away with as occasion requires.

the ice madefrom the water of condensation, as hereinbefore -rei'erred to, will be pure and of high grade. h

In F ig. G we have shown a slightly modified form of our invention as applied particularlyA to low-speed self-oiling engines of .-the class stated. In low-speed' engines of this class, t-he splashing 'of the oil in basin slight, and usually the 'cranliLdisk 5 rotates vin the directionA as indicated by the arrow,

-10 and 101l will be thoroughly lubricated.

As said cross-head 9a reciprocates' slowly there is very little, if any, splashing of the oil forwardly into the said casing, and therefore said pan 24: and shield 27 may be pro- To prevent'any oil dropping from said top guide 10, however, onto said piston-rod `We suitably arrange on said pistonrod for- Ywardly 'of said cross-head 9a a suitable trough-shaped pan 30, whereby any oil dripping from said top guide 10a orthe 'top of said cross-head 9a will be caught by said pan 30 and led to the sides and bottom of casing 1 away from said piston-rod, the portion ot said piston-rod reciprocating in said cylinder 13. being thereby kept entirely clean and free from oil;v

v As our invention has heretofore been used .by us in connection with self-oiling'enginesof the class stated, and for which use, as has been hereinbefore mentioned, it is 'particularly ap licable, it has been herein shown 'and des `ibed in that connection, but it is to be understood that our invention, or parts thereof, mightequally well be applied to, or used in connection with, engines 'of other kinds vand that minor changes in construction, arrangement andcombination inthe several 'parts of our invention can be made and substituted for those herein shown and described without departing from the nature f and principle of our inventlon.

Having thus described our invention, what we claim and desire to secure by Letters Patentis 1; In a self-oiling engine of the class. stated, the combinatlon -With a casing prot vided with an oil basin at one' end, of a crank-shaft mountedin said casing, a connect-ing-rod pivot'allly connected to said I cranlcshaft, guidesvin said casinga cross:

head pivotally connected to said connecting-4 rod and slidable on said guides, a cylinder, a piston-rod connected to said cross-head 'and adapted to reciprocate in -said cylinder,

means adapted on the rotation of said crankshaft to splash the oil in said basin, and

means adapted to prevent oil dripping on to said piston-rod; substantially. as described. 2'. In a self-oiling engineof the class stated, the combination with4 a casing pro-V vided with an oil basin at oneend, of a" crankshaft-mounted in said-casing, a con.

necting-rod pivota-lly 'connected .to said crank-shaft, guides in said casing,- a crossf head pivotally connected' to said connecting# rod and slidable on said guides, a cylinder;v

a piston-rod connectedl to said cross-'head and adapted to reciprocate in said cylinder, means adapted on the rotation of said crankshaft to splash the oil insaid basin, and a. A

shield adapted to prevent oil dripping from the top of said casing on tosaid piston-rod; substantially as described.

In a` selfoiling engine of the class stated, the combination with a casing'provided with an'oil basin at one end, of a 'crankshaft mounted'in 'said casing, a conlnecting -r0d pivotally connected to said crank-shaft, guides in said casing, a crosshead pivotally connected tosaid connecting' rod and slidable on said guides, a cylinder, ,-.1- 5j 1 i a piston rod connectedV to said cross-head and adapted to reciprocate in said cylinder,

means adapted on"the rotation of said crank? shaft to splash the oil in said basin, a shield adapted to prevent oil dripping from the top' of said casing on to'said piston-rod, and a pan arranged on and movable with .said piston-rod adapted to prevent oil -on said piston rod Working into said cylinder; stantially as described. y

4. In a selfwoiling engneof the fcla'sfV stated, the combination with a casing pro-l vided4 with'an oil basin at one end, of a. crank-shaft mounted in said casing, means- Y adapted on the rotation/,of said'cr'anleshaft to splash the oil in said ba sina mninecting`lian- ' head and guides, means arranged@ on and rod pivotally connected to -said crankshaft,

guides in said casing, a cross-head pivotally A connected to said connecting-rod and slidable-on said guides, a cylinder, apiston-rod lconnected tosaid orossrhead and adapted to' 4reciprocate insaid cylinder on therotation of said crank-shaft, means in said 4'casingA adapted to limit the amount of oil splashed from said basin onto said. cross-head and guides, means arranged on and movable with said piston-rod adapted to prevent oil on said piston-rod Working-into said cylinder;v and means in said casing adapted to prevent oil dripping from thetop of said casing onto said piston-rod; substantially asvdescribed,

5. In a self-ilng' engine of thecluss stated, `the combination with a casing prog/vded with an oil-basin at one end, V,of a

A crank-shaft rotatably mounted, in said casing, means adapted onfthe rotation of said crank-shaft to splash .the oil in said basin, a'

connecting-rod pivotally connected to said cranlt-shaft,' guides in said casing, a cross'- headvpivotally connected to said connectingrod and slidable on said guide's, a cylinder, a

4piston-rod connectedto said cross-head and adapted to receiprocate in said cylinder on the rotation of said crank-shaft, means in said casing adapted to limit the amount of oil splashed from said basin onto saidcrossmovable With, said piston-rod ada Vted to prevent oil-on said piston-rod working, into said cylinder, and a shield arranged in said easing adapted to prevent oil dripping from .head pivotally connected to said connectthe top 'of said casing onto'said-piston-rod; substantiallyv'as descr1bed'.

6.7In`a self-oiling engine of the class stated,"the lcombination with a. casing provided with 'an oil basin at one end, of a l(mank-shaft rotatably mounted in said casl ing, means adapted tol splash the oil in said -bas'in on the rotation of saidcra-nk-shaft, a

connecting-rod pivotally connected to saidl crank-shaft, guides in saidlfc`asing',l a crossing-rod and. slidable yon saidl iguides, a. cylinder,- a piston-rod connected -to said Across-head Aand 'adapted' to -i'eciprocate in said cylinder .on the' rotation of said crankshaft, a wall in said 'casing between said oilbasin and guides, said Wall beinglprovided lwith an elongated slotand adaptedto limitl the amont of oil splashed from said basin onto said cross-head and gudes,a pan arranged on and movable'witli said piston-rod 'adapted' tol prevent oil on said piston-rod `Working into sad'cylinder, and a semi-cylin-f 

